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(No Model.)

W.v A. TURNER. FLUSHING VALVIL No. 477,716. Patented June 28, 1892.

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ilm'reo States PATENT OFFICEa WILLIAM A. TURNER, OF WORCESTER, MASSACI-IUSETTS, ASSIGNOR TO EDMUND CONVERSE, OF SAME PLACE.

FLUSHINe-VALVE.

SPECIFICATION forming part of Letters Patent No. 477,? 16, dated June 28, 1892. Application filed November 15, 1889. erial No. 380,485. (No model.)

.T 0 (LZZ whom it Worl/y oonoern:

Be it known that I, WILLIAM A. TURNER, a citizen of the United States, and a resident of Worcester, in the county of lVorcester and State of Massachusetts, have invented a newb and useful Improvement in Flushing-Valves, of which the following is a specification, refcrence being had to the accompanying drawings, in which- Figure 1 represents a section-al view of a portion of a flushing tank or cistern containing one of my improved fius'hing-valves, also shown in sectional view, the valve proper being represented as closed; and Fig. 2 represents the same view shown -in Fig. 1,' but with the valve open and in the operation of closing.

Similar letters refer to similar parts in both the views.

The object of my present invention is to provide a valve for use with the fiushing-tanks of water-closets and similar uses which shall cause a definite and uniform flow of water Whenever opened, known as a sure-supply valve; and I accomplish this purpose by means of the device represented in the accompanying drawings, in which- A denotes a portion of a fiushing-tank filled to the high-water line with water supplied by means of any self-regulative device known for the Purpose-such as an ordinary ball-coclc Valve-by which the water-supply is out off whenever the tank is filled. Such Valve I have not herein described or illustrated in the drawings, as it forms no part of myinvention and its construction and use are well understood. In the bottom of the tank A is an opening B, communicat-ing with the closet through a eonnecting` flushing-ppe in the usual manner. `vVater is admitted to the flushing-pipe through the Opening O, which is closed by the valve-disk C', connected with the lever D, which is pivoted at Dl to the arm D*7 projecting from the cylinder E.

E denotes a cylinder closed at the upper end by a cap E', provided with a valve E2, opening into the cylinder to admit water to flow into the cylinder, but closing to prevent the escape of water from the cylinder. The cylinder E is supported by the horizontal portion of pipe F, with which the stand-pipe G eommunicates, and serves as an overflow-pipe to allow the surplus water to escape in case the ball-cool: valve fails to close the watersupply. The cylinder E has a series of holes at its lower end, through which water flows freely into or out of the cylinder E, and within the cylinder E is a piston H, provided, preferably, with a iiexible disk a, in order to furnish a packing against the side of the cylinder. The piston H is attached to a piston rod or stem H', conneeted with the slotted end of the lever D, to which a cha-in b is connected, allowing the valve'O' to be raised by the attendant in the usual manner. The cap E' is also provided with a small hole c, which is partially closed by a sliding plate d, provided with a slot and held upon the upper surface of the eap E' by a thumb-screw or any other means. The object of the sliding` plate is to allow the size of the hole c to be varied in order to offer a greater or less resistance to the flow of water from the cylinder E. As the valve-disk O' and piston-rod H' are both connected at opposite ends to the pivoted lever D, the angular motion of the leverD will impart a simultaneous movement in opposite directions to the valve-disk O' and piston l-I', moving the piston downward in the cylinder E as the valve-disk O' is raised to allow a fiow of water through the Opening B into the tlushing-pipe. The valve-disk C' and the long arm of the lever D are made heavy enough to more than counterbalance the short arm of the lever and its connected parts, so the valve-disk O' will fall by its own gravity and close the Opening O when the chain b is released. As the `Valve-disk C' is raised the piston I-I is moved downward within the cylinder E into the position shown in Fig. 2 of the drawings, forcing the water in the cylinder through the holes ES, and when the valve O' is released and allowed to fall by its own weight the movement of the piston is reversed, closing the valve 1112 and forcing the water contained in the cylinder through the small Opening c, thereby retarding the upward movement of the piston and causing the valve C' to close slowly, permitting the fiushing-stream to con- 4tinue for a longer period, which is deterrnined by the size of the Opening o.

I am aware that the closing of a flushingf valve has been heretofore retarded by the IOO movement of a piston through a cylinder containin g Water,which the piston forced through a restricted opened,and I do not herein olaim such, broadly; but

WVhat I do elaim, and desre to secure by Letters Patent, is-

The combination, with a flushing-tank, of the horizontai pipe F, provided at its central section With the exit-Opening B and at one end an inlet-opening O and at the opposite end a stand-pipe G, extendingvertieally above the hi gh-Water line, a cylinder E, resting Upon said horizontal pipe and com mnnieatingr with the tank at its lower end, an inlet-valve 152 and a restricted outlet-openingc, placed at the 

